Answer:
Explanation:
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In this case, we write the reaction again:
In such a way, the first thing we do is to compute the reacting moles of lead (II) nitrate and potassium iodide, by using the concentration, volumes, densities and molar masses, 331.2 g/mol and 166.0 g/mol respectively:
Next, as lead (II) nitrate and potassium iodide are in a 1:2 molar ratio, 0.04635 mol of lead (II) nitrate will completely react with the following moles of potassium nitrate:
But we only have 0.07885 moles, for that reason KI is the limiting reactant, so we compute the yielded grams of lead (II) iodide, whose molar mass is 461.01 g/mol, by using their 2:1 molar ratio:
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Answer:
Magnesium oxide is an ionic compound that can be used as a building material. MO2 is actually a raw material that used in producing cement for building houses, buildings, and other constructions.
Explanation:
Answer:
Explanation:
Hello there!
In this case, since the chemical equation representing the neutralization of the weak base quinine can be written as follows:
Whereas we have 0.100 moles of the base and those of acid as shown below
Which means that the remaining moles of quinine are:
And the resulting concentration:
Now, the calculation of the pH requires the pKb of quinine (5.1) as its ionization in water produces OH- ions:
And the equilibrium expression is:
Which is solved for x as follows:
Which means the pOH is:
And the pH:
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It would be useful to know the distance between a gun fired and its target because if you know the distance you might be able to find more clues as to who did it by looking at where the shooter shoot the victim.